Disorder effect in low dimensional superconductors

Details Disorder effect in low dimensional superconductors Disorder effect in low dimensional superconductors

1994-06-17

arxiv.org/abs/cond-mat/9406075v1

Physics

Condensed Matter

2 pages, uuencoded compressed postscript file, IRC-9406100

Scientific paper

10.1016/0921-4534(94)92425-2

The quasiparticle density of states (DOS), the energy gap, the superfluid density $\rho_s$, and the localization effect in the s- and d-wave superconductors with non-magnetic impurity in two dimensions (2D) are studied numerically. For strong (unitary) scatters, we find that it is the range of the scattering potential rather than the symmetry of the superconducting pairing which is more important in explaining the impurity dependences of the specific heat and the superconducting transition temperature in Zn doped YBCO. The localization length is longer in the d-wave superconducting state than in the normal state, even in the vicinity of the Fermi energy.

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